HYBRID AUTOMATIC REPEAT REQUEST (HARQ) -ACKNOWLEDGMENT (ACK) ENHANCEMENT FOR SEMI-PERSISTENT SCHEDULED (SPS) PHYSICAL DOWNLINK SHARED CHANNEL (PDSCH) IN AN UNLICENSED NEW RADIO SPECTRUM (NR-U)

WIPO Patent Application WO/2022/036666

A1

A method of wireless communication, by a user equipment (UE) includes receiving downlink semi-persistent scheduling (SPS) configurations. The method also includes receiving a physical downlink shared channel (PDSCH) transmission for each of the plurality of SPS configurations. Each PDSCH transmission has no associated physical downlink control channel (PDCCH). The method further includes determining whether successful decoding of each of the PDSCH transmissions occurred. The method further includes generating a hybrid automatic repeat request (HARQ) codebook for the PDSCH transmissions based on the determining. The method also includes transmitting the HARQ codebook in a physical uplink control channel (PUCCH) only when at least one ACK is present in the HARQ codebook.

GUO SHAOZHEN (US)
SUN JING (US)
XU CHANGLONG (US)
ZHANG XIAOXIA (US)
PRAKASH RAJAT (US)
XU HAO (US)

PCT/CN2020/110429

February 24, 2022

August 21, 2020

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QUALCOMM INC (US)
GUO SHAOZHEN (CN)
SUN JING (US)
XU CHANGLONG (CN)
ZHANG XIAOXIA (US)
PRAKASH RAJAT (US)
XU HAO (CN)

H04L1/00; H04W72/04

WO2019192583A1

2019-10-10

CN110830151A	2020-02-21
CN111132329A	2020-05-08

NTT DOCOMO, INC.: "Discussions on DL SPS enhancement", 3GPP DRAFT; R1-1912891, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, 9 November 2019 (2019-11-09), Reno, USA, pages 1 - 9, XP051823670

NTD PATENT & TRADEMARK AGENCY LTD. (CN)

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